Paul Di Resta has confirmed that he has parted company with manager Anthony Hamilton.

Reports had suggested that the Scot was no longer working with Lewis Hamilton's father, with rumours of breakdown in the relationship.

The Force India driver refused to state any reasons for the split and insisted that he is focused on racing.

"I think everything's been said that had to be said. I'll confirm we're not working together," said the 26-year-old. "At the moment I'm just fully focused on my racing.

"At the end of the day it's the results that count for me and what's going to drive me forward.

"We've had a good year up until now and we've got to continue that progress and the focus this weekend is to have a good race."

The next race is the British Grand Prix this weekend.